gofar99 Messages: 1949 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
That is rather odd. Based on how a lot of gear works I suspect either voltage fluctuation or interference. I would rate the voltage issue more likely though. It is likely that there is some sort of power filtering in the unit or in the wiring going to it. That would be the first place to check. A bad ground connection there might cause the problems. A bad filter could also introduce EMI into the unit and fool it into thinking it was some sort of change signal. If the unit has remote control capability then it is also possible that something is tricking it into changing. I know these are rather general concepts and the average person will not be able to check on them. I would expect that the best way to solve the problem is to take it in for service. Likely a costly experience. It might be cheaper to just replace it.